Health ❯ Public Health ❯ Epidemiology ❯ Disease Surveillance

Variant Monitoring

XFG Stratus Is Now the Third-Most Common COVID-19 Variant in U.S.

The WHO has placed the recombinant lineage on its watchlist, assessing its global risk as low, with existing vaccines expected to remain protective.

XFG Variant Now Drives Nearly Half of Global COVID-19 Cases

WHO Lists XFG as COVID Variant Under Monitoring After Rapid Global Rise

Stratus Variant Overtakes 30% of UK Covid Cases as It Spreads Worldwide

Stratus Covid Variant Now Dominant in England

Nimbus Covid Variant Causes ‘Razor Blade’ Throat as It Becomes Second-Most Common U.S. Strain

Omicron Subvariant ‘Nimbus’ Surges Globally as WHO Classifies It Under Observation

Nimbus Covid Variant NB.1.8.1 Accelerates Globally as UK Confirms 13 Cases

New Covid Variant NB.1.8.1 Spreads to UK as Global Infections Rise

NB.1.8.1 Covid Variant Infections Climb Globally, Reach US States